Accelerating Universe with spacetime torsion but without dark matter and dark energy

TL;DR

This paper demonstrates that in Poincaré gauge theory of gravity, spacetime torsion can explain the effects attributed to dark matter and dark energy, resulting in cosmological equations similar to the standard Lambda-CDM model.

Contribution

It shows that spacetime torsion within Poincaré gauge gravity can replicate dark matter and dark energy effects without introducing these components.

Findings

Cosmological equations with torsion match Lambda-CDM asymptotics.

Dark matter and dark energy effects are explained by torsion-induced modifications.

The theory aligns with standard cosmological observations without dark components.

Abstract

It is shown that cosmological equations for homogeneous isotropic models deduced in the framework of the Poincar\'e gauge theory of gravity by certain restrictions on indefinite parameters of gravitational Lagrangian take at asymptotics the same form as cosmological equations of general relativity theory for $\Lambda CDM$-model. Terms related to dark matter and dark energy in cosmological equations of standard theory for $\Lambda CDM$-model are connected in considered theory with the change of gravitational interaction provoked by spacetime torsion.